Toronto, Dec. 6 -- Canadian authorities said Wednesday that they have arrested the chief financial officer of China's Huawei Technologies for possible extradition to the United States.

China demanded her immediate release, and a former Canadian envoy to China warned the case might lead to retaliation by the Chinese against American and Canadian executives.

Justice Department spokesman Ian McLeod said Meng Wanzhou was detained in Vancouver, British Columbia, on Saturday. Meng is a prominent member of Chinese society as deputy chairman of the board and the daughter of company founder Ren Zhengfei.

McLeod said a publication ban had been imposed in the case and he could not provide further details. The ban was sought by Meng, who has a bai...